Batteriezelle und Herstellungsverfahren Dafür, Batterie und Elektrische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4819340

Anmeldetag

5. Dezember 2023

Veröffentlichung

12. Juni 2025

Rechtsraum

EP

IPC

H01M50/30

Abstract

The present application provides a battery cell and a preparation method therefor, a battery, and an electric device. The battery cell comprises: an electrode assembly and an outer package, the electrode assembly comprises a positive electrode sheet, a positive electrode active material layer is provided on the positive electrode sheet, and the positive active material layer comprises a transition metal oxide; the outer package is used for packaging the electrode assembly, a venting device is arranged on the outer package, and the venting device comprises a breathable membrane. The venting device is mounted on the outer package of the battery cell, and excess gas generated due to the instability of transition metals during use of the battery cell is discharged out of the battery cell in time by means of the breathable membrane of the venting device, so that the explosion-proof valve of the battery cell is not prone to abnormal valve opening due to excessively large internal air pressure, improving the reliability of the battery and prolonging the service life thereof.

Anmelder

Firma

Contemporary Amperex Technology Co., Limited

Land

🇨🇳 China

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